Photosynthesis Research

, Volume 31, Issue 3, pp 195-212

First online:

Anatomy of non-uniform leaf photosynthesis

  • Ichiro TerashimaAffiliated withDepartment of Botany, Faculty of Science, University of Tokyo

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Since 1986, non-uniform photosynthesis over the leaf area that may be attributed to patchy stomatal closure, has been an important issue in stress physiology of photosynthesis. In this review, I first outline the gaseous environment within the intercellular spaces, because this is the most fundamental background of this problem. Then, recent studies approaching non-uniform photosynthesis are reviwed. After examining techniques for the detection of non-uniform photosynthesis or non-uniform stomatal aperture, results of the relevant studies are discussed for respective stress factors, seeking causes and consequences of non-uniform photosynthesis. From these, mechanisms responsible for, and consequences of non-uniform photosynthesis, are considered. The problems which should be challenged are also pointed out.

Key words

bundle sheath extension gas diffusion gas exchange heterobaric and homobaric leaves stomata stress